US3885255A - Covering arrangement for swimming pools - Google Patents

Covering arrangement for swimming pools Download PDF

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Publication number
US3885255A
US3885255A US463569A US46356974A US3885255A US 3885255 A US3885255 A US 3885255A US 463569 A US463569 A US 463569A US 46356974 A US46356974 A US 46356974A US 3885255 A US3885255 A US 3885255A
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US
United States
Prior art keywords
drum
arrangement
motor
cover
coupling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US463569A
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English (en)
Inventor
Jorg L Vorbach
Peter Tess
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oberschwaebische Metallwarenfabrik GmbH and Co KG
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Oberschwaebische Metallwarenfabrik GmbH and Co KG
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Publication of US3885255A publication Critical patent/US3885255A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H4/00—Swimming or splash baths or pools
    • E04H4/06—Safety devices; Coverings for baths
    • E04H4/10—Coverings of flexible material
    • E04H4/101—Coverings of flexible material wound-up on a fixed axis

Definitions

  • a reversible motor operates the drum for unwinding the cover when the motor operates in one direction of rotation. In the reverse direction of the motor, the cover is rolled off from the drum.
  • a carriage serves to carry the drum which is provided with transport mechanisms on each side.
  • a coupling arrangement connects the motor to the transport mechanisms when the motor rotates the drum for the purpose of unwinding the cover from the drum. When, on the other hand, the cover is to be wound onto the drum, the motor is connected by the coupling arrangement to the drum.
  • the invention concerns a covering arrangement for free areas, particularly swimming basins and pools, with a flexible cover attached at one end to a drum, and capable of being rolled up on and off the drum which is operated by a motor.
  • Covering installations of this type are applicable to the covering of many different types of free areas, for example: green houses, roovers, tennis courts, atria, flower beds, etc.
  • the installations are particularly important for covering swimming pools or basins.
  • the cover can rest on the water surface, and can be floatable, or it can be led along the edges of the basin.
  • the cover can be formed from layers, or it can be rigid in the transverse direction and thereby be able to support at least children.
  • the drum is in a fixed location at one end of the area to be covered, while the cover, which can be formed by rigid elements to constitute a roll-blind type of structure, is pulled out by hand, and pulled in by a spring.
  • Motor drives are also known for this purpose.
  • the drum In an installation for covering tennis courts or similar areas, the drum has been provided with a hand crank and installed on a cart that can also be moved by hand. But here, the operation is particularly cumbersome and laborious.
  • covers made of zig-zag configurations of foldable plates, pulled out by a carriage driven by an electric motor.
  • the covers are pulled out of either a fixed housing or a housing on the carriage. But such installations are expensive and subject to frequent failure.
  • the objects of the present invention are achieved by providing a covering installation with a flexible cover which is attached at one end to a drum, and is capable of being rolled onto and off the drum which is operated by a motor.
  • the drum is installed on a carriage that is transportable in a conventional manner by a reversible transport motor and two lateral transport mechanisms.
  • the transport motor can be coupled in its one direction of rotation to the transport mechanisms for pulling out or unwinding the cover.
  • the transport motor can be coupled in its other direction to the drum for rolling up the cover.
  • two free-running couplings are connected to a common drive pulling element.
  • the coupling housings serve as the direction-changing wheels for the pulling element, which can be in the form of a belt, chain, or similar.
  • the transport motor constructed as a gear motor, is placed inside the drum, and the motor housing is rigidly connected to the drum, while its drive shaft is coupled with a part of the frame of the transport mechanism in a manner enabling transmitting a torque.
  • the drum is coupled to each of the front wheels of the transport mechanism by a freerunning coupling.
  • the drum can form the only connecting element between the two lateral transport mechanisms.
  • the transport motor is entirely enclosed in the drum, and is not seen from the outside. Since the motor housing is rigidly connected to the drum, the latter can serve as the cable drum for the energysupplying cable.
  • the cable needs no control wires since the control is carried out from a fixed location.
  • no current path goes through a rotating contact, as is required for a separate cable drum.
  • the number of separate parts is thus greatly reduced, correspondingly lowering the cost of the covering installation and the weight of the carriage. Therefore, very low drive power is required.
  • a motor designed for automobile window wipers will suffice.
  • the support of the drive shaft on the frame of the transport mechanism is constructed as a brake in the manner of a slip clutch.
  • the shaft which is normally held, can turn without causing mechanical damage.
  • automaticallyoperating limit stops are not absolutely essential.
  • the front wheel is supported on the frame of the transport mechanism by a brake operating at least during the roll-up procedure.
  • the front wheel if possible, should have a greater outer diameter than the drum with rolled-up cover.
  • An elastic substance should be provided for the equalization of the differences in speed between front wheel and drum. This insures that the carriage, in the pullingout procedure, is always driven at a speed that is slightly higher than the unrolling speed of the cover. Thus, the latter is also pulled taut during this procedure without addtional effort, keeping the carriage always correctly oriented laterally.
  • a slip clutch can serve as a means of equalization connected in tandem with the free-running coupling between front wheel and drum.
  • equalizing element from a tire of soft, elastic, deformable material such as rubber, placed at the circumference of the front wheel.
  • the slip clutch there is the possibility that the tire, on reaching the limits of its holding forces on the surface, slips a little, thereby reducing the tension.
  • the equalizing deformation is limited to the portions of the circumference operative at the moment.
  • During unrolling always new sections of the circumference are deformed and then released. This is particularly pronounced when the tire has evenly distributed, radially protruding extrusions such as teeth or transverse ribs that are not supported in the circumferential direction against each other.
  • FIG. 1 is a sectional view through a rectangular swimming pool with a covering installation according to the present invention
  • FIG. 2 is a plan view of the swimming pool with the covering installation of FIG. 1;
  • FIG. 3 is a partial sectional view taken along line III- III In FIG. 1, through a drum end with transport mechanism;
  • FIG. 4 is a plan veiw of a drum end of an altered covering installation with a conical cable drum part
  • FIG. 5 is an embodiment according to FIG. 4; with a flat cable band;
  • FIG. 6 is a plan view of a transport mechanism with a caterpillar-like drive belt
  • FIG. 7 is a bottom view of the caterpillar arrangement of FIG. 6.
  • FIG.- 8 is a side view of another embodiment of a cover carriage, according to the present invention.
  • a rectangular-shaped swimming pool has frontal walls 1, 2 and side wall 3, 4.
  • a cover 30 is secured to a substantially horizontal plane surface 5 by means of bolts 32 or the like through its end 31, in the region of the frontal wall 1.
  • the supporting surface 5 surrounds the swimming pool.
  • the other end of the cover 30 is wound on a cylindrical drum 27 which connects two transport mechanisms 43, 44 to a common transport wagon 45.
  • Each of the two transport mechanisms has a transport frame 46, a front wheel 47, and two rear wheels 48.
  • At least one end of the drum is linked to a driving motor which serves as a transport motor 49.
  • This motor is preferably in the form of a conventional disc-wiping type of DC motor which may be operated from a 12 volt voltage supply.
  • a bearing member 52 is arranged on the driving shaft 51 of the transport motor, which is located centrally with respect to the drum axis 50.
  • the bearing member 52 carries a first braked disc 53 which contacts the transport mechanism frame 46, through a second braked disc 54.
  • a threaded portion 56 of the bearing member is passed through a bore of the frame 55, and is surrounded by a helical spring 57 which is positioned between the frame portion 55 and two nuts 58.
  • the spring, the two nuts and the two wheels 48 are covered from the exterior by a hood 59, which is placed over the frame portion 55.
  • the drum 27 has an end cap 60 which is fixed to a ball bearing 61, so that the drum is held on the bearing member 52, through the ball bearing 61.
  • the end cap 60 is in a torque transmitting manner connected with the first coupling disc 62 which forms a free-running coupling with a further coupling disc 63.
  • the two coupling discs have elastically bendable projections on their frontal surfaces. These projections are in the form of short fiber portions which are inclined with respect to the plane of the disc in the circumferential direction, so that they reach into each other in a first direction of rotation whereby they transmit a torque. In the opposite direction of rotation, howwever, these projections lie against their discs and thereby provide a freerunning effect.
  • the drum '27 is held on the bearing member 52 by way of the aforementioned ball bearing 61 and the hub of the wheel 64.
  • the second coupling disc 63 is in a torque transmitting manner connected with the wheel plate member 64 of the front wheel 47.
  • a front driving rim 65 is drawn onto this wheel plate 64.
  • the circumferential portion of the rim 65 is subdivided through transverse notches into transverse ribs 66 which project freely towards the exterior.
  • the exterior diameter of the front wheel 47 is substantially larger than the diamter of the drum 27 when the cover is fully wound onto the drum.
  • the wheel plate 64 has a hub portion 67 bent upwards, as shown in FIG. 3, which lies between the bearing member 52 and the ball bearing 61.
  • this bearing arrangement can, for example, be in the form of a ball or roller bearing also on the bearing member 52, or outside of the ball bearing 61 on the end cap 60.
  • Two further coupling discs 68, 69 are arranged between the wheel plate 64 and the brake disc 53. These further coupling discs 68, 69 are associated with a second free-running coupling which is engaged in the opposite rotational driection corresponding to the engagement of the coupling disc 62, 63, when the cover is wound on.
  • the coefficient of friction between the coupling disc 69 and the brake disc 53 is essentially smaller than that prevailing between the brake discs 53, 54.
  • a substantially smaller brake torque is thereby obtained on the front wheel 47 than on the motor drive shaft 51. This smaller braking torque occurs only when winding up the cover, so that the transport mechanisms become braked only thereby and maintain the cover in stretched condition.
  • the free-running coupling 62, 63 can also be located between the'drum 27 and the front wheel 47, with one or two discs forming, for example, a slip clutch.
  • the entire combination of brake and coupling discs are, in all cases, only of substantially small thickness.
  • This thickness of this combination or package of brake and coupling discs are harmonized to the length of the bearing member 52, so that the shoulder surface 70 from which the threaded portion 56 extends, never comes into contact with the frame portion 55. Since the bearing member 52 abuts against the frame portion 55 axially through the motor 49 on the drum and through the nuts 58 and spring 57, the tension of the spring 57 between the frame portion and the end cap 60 is transmitted entirely onto the disc package therebetween.
  • the entire transport mechanism can be also removed from the drum with the coupling and braking means, after removal of the hood 59 and loosening the nuts 58.
  • the bearing member 52 can be connected in axial direction with the driving shaft 51, as might be assumed from above. This can be achieved through a threaded rod or similar means, which is drawn through an opening in the durm and in certain cases, through the end cap 60. It is, however, preferable to carry out this connection with the drive shaft by a mounted coupling which is insensitive to the direction of axle motion. This coupling then permits only small or no forcable torques to be transmitted to the shaft'
  • the bearing member can then abut against the inner ring 71 of the ball bearing 61, through a shoulder surface.
  • the end cap 60 then forms a closed assembly with the transmit mechanism, and this assembly can be mounted by itself onto the cylindrical end of the drum, whereby the bearing member comes into contact with the driving shaft 51. At the same time the end cap becomes coupled to the drum through, for example, two bolts.
  • the unit Since here the axial supporting force is not transmitted through the transport motor, the unit is able to function, due to the driving procedurre, when there is no transport motor at the particular drum end. Thus, it is possible to insert a transport motor at both ends or only at one, as required. Should the transport resistances prove too great for a transport motor, for example because of a change in span or in the transport speed, it is only necessary to install a second transport motor at the other drum end. However, the torque from one or two motors can be taken off in an evenly distributed manner at both ends of the drum 27, due to the great torsional stiffness of the drum Both transport motors can also be connected in parallel and to common, permanently attached current connectors in the drum. It is also possible, in a manner to be explained below to attach the end of a currentcarrying cable to the drum, and to connect it directly to the motor connections. The cable also needs to concontrol device, to which, again, the cables can be connected without rotary contacts.
  • the transport motor 49 is connected for a first direction of rotation, in which the motor housing with the drum 27 rotates clockwise around driving shaft 51.
  • the driving shaft 51 is held to part 55 of the frame by the bearing member and brake 53, 54 in a manner enabling torque transmission.
  • the freerunning coupling 62, 63 is opened, i.e., the front wheel 47 is not driven but rolls off freely, while the freerunning brake 68, 69 transmits a small braking torque through brake 53, 54.
  • the carriage 45 is pulled to the right in FIGS. 1 and 2 only by the tension applied to cover 30. Since this tension is applied to the entire width of the cover, and the carriage is slightly braked, an exact lateral orientation results, becoming more exact as the carriage approaches the cover end 31 attached to the end of the basin. Additional centering devices are thus not required.
  • each transverse rib 66 arrives in a relaxed condition at the supporting area 5 and is deformed until released, without influencing the neighboring transverse ribs, by the difference between the drive distances of the wheel circumferences and the cover. If actually the difference between the distances is slightly larger than the deformation, then, in each case, one of the ribs slides slightly, without deteriorating the even rolling procedure. In this direction of rotation, too, the brake 53, 54 is activated when the cover is fully pulled out, or the transport movement is blocked by an obstruction.
  • one end of drum 27 is formed into a conical surface 74, bordered by two discs 73.
  • a cylindrical cable containing only two conductors 76 is wound onto the surface 74 in the manner of a spiral.
  • the concial angle of the conical surface is so dimensioned that the winding diameter increases for each rotation by approximately the same,amount as the increase obtained in rolling up the cover, so that the cable is always under the same tension as the cover.
  • FIG. 5 Another possibility is shown in FIG. 5.
  • a flat cable ribbon 77 is provided that is either permanently fixed to the edge of cover 30, or is run through a tube 78 attached to the edge of the cover.
  • the cable ribbon has approximately the same thickness as the cover, and is rolled up just as the latter, without any significant resulting change in diameter.
  • a further advantage of the caterpillar embodiment is the improvement in the directional stability of the transport drive.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
US463569A 1973-09-13 1974-04-25 Covering arrangement for swimming pools Expired - Lifetime US3885255A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2346139A DE2346139C2 (de) 1973-09-13 1973-09-13 Vorrichtung zum Abdecken eines Beckens, insbesondere eines Schwimmbeckens, mit einer auf einem Wagen gelagerten Wickel-Trommel

Publications (1)

Publication Number Publication Date
US3885255A true US3885255A (en) 1975-05-27

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ID=5892453

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Application Number Title Priority Date Filing Date
US463569A Expired - Lifetime US3885255A (en) 1973-09-13 1974-04-25 Covering arrangement for swimming pools

Country Status (8)

Country Link
US (1) US3885255A (xx)
AT (1) ATA255274A (xx)
BE (1) BE813334A (xx)
DE (1) DE2346139C2 (xx)
DK (1) DK197074A (xx)
FR (1) FR2244066B3 (xx)
NL (1) NL7404393A (xx)
SE (1) SE7404467L (xx)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4060860A (en) * 1976-03-31 1977-12-06 Lamb Joe H Braking system for motorized swimming pool covers
US4103368A (en) * 1976-07-12 1978-08-01 Tolo, Incorporated Pool cover having solar energy heating feature
US4195370A (en) * 1978-09-12 1980-04-01 Budd-Ke Enterprises, Inc. Apparatus for reeling and unreeling pool covers
US4407027A (en) * 1981-08-10 1983-10-04 Colon Jr George M Pool-cover apparatus and method
US4467978A (en) * 1982-10-27 1984-08-28 Sealed Air Corporation Reel system for swimming pool covers
US4675922A (en) * 1985-01-04 1987-06-30 Odyssey Systems Limited Hydraulic power attenuator
US5533214A (en) * 1990-05-04 1996-07-09 Graham; Wayne B. Sheet roll up
US5676652A (en) * 1992-07-23 1997-10-14 The Procter & Gamble Company Absorbent articles having undergarment covering components with mechanical fasteners having improved tactile properties
US5890240A (en) * 1990-05-04 1999-04-06 Graham; Wayne B. Sheet roll up
WO2000046469A1 (fr) * 1999-02-05 2000-08-10 Suez Lyonnaise Des Eaux Dispositif de manipulation d'une bâche ou d'une membrane sur l'ensemble de la surface d'un bassin
EP1410934A1 (en) * 2002-10-14 2004-04-21 Damiano Miglioranza Tarpaulin system for covering and uncovering, especially for a freight vehicle
US20040143896A1 (en) * 2001-04-10 2004-07-29 Last Harry J. Traveling cover bench system with hydraulic fluid actuator
US20130092779A1 (en) * 2011-10-18 2013-04-18 Maytronics Ltd. Pool Cover Winding System Using Water-Powered Piston Motor
US20150101116A1 (en) * 2013-10-13 2015-04-16 Maytronics Ltd Pool cover leading edge rake
WO2016205901A1 (en) * 2015-06-23 2016-12-29 Technics & Applications, Afgekort T&A, Besloten Vennootschap Met Beperkte Aansprakelijkheid Cover for a swimming pool or whirlpool bath and swimming pool or whirlpool bath that is provided therewith
FR3084900A1 (fr) * 2017-11-23 2020-02-14 Florent Roussel Dispositif et procede d'enroulement d'une couverture de protection pour bassin
IT201900013359A1 (it) * 2019-07-30 2021-01-30 Emmer S A S Di Orsi Roberto E Prioli Mattia Sistema per la copertura di una piscina
CN113939186A (zh) * 2019-03-29 2022-01-14 T·麦卡拉 用于覆盖物的辊设备及其使用方法

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2438137A1 (fr) * 1978-10-03 1980-04-30 Radiguet Andre Dispositif pour enrouler et derouler une couverture de piscine
FR2508525A1 (fr) * 1981-06-26 1982-12-31 Pagnac Guy Couverture motorisee de piscine et autres bassins analogues
CH680081A5 (xx) * 1989-11-08 1992-06-15 Bieri Blachen Ag
BE1018230A3 (fr) * 2008-07-25 2010-07-06 Becoflex Sa Dispositif de couverture d'une surface avec fermeture a glissiere avec securite.
BE1018229A3 (fr) * 2008-07-25 2010-07-06 Becoflex Sa Dispositif de couverture d'une surface surplombant une cavite.
FR2997118B1 (fr) * 2012-10-19 2014-12-12 Ec2M Dispositif a compensation pour recouvrir et decouvrir une surface par un element de couverture enroulable
FR2999629A1 (fr) * 2012-12-19 2014-06-20 Roux Marc William Le Dispositif de motorisation d'enrouleur mobile de couverture de piscine
FR3037349B1 (fr) * 2015-06-12 2020-08-28 Aqua Fermetures Systeme de motorisation pour une bache enroulee sur un tube, en particulier pour une piscine, comportant une motorisation integree dans le tube
FR3058433B1 (fr) 2016-11-07 2019-01-25 A.S.Pool Chariot de support pour systeme de recouvrement de bassin
FR3090024A1 (fr) * 2018-12-18 2020-06-19 Automatización SUperior de TECnologia SL. Dispositif d’enroulement d’une bâche à barres pour piscine et procédé d’enroulement
FR3096044B1 (fr) * 2019-05-15 2021-05-14 Pbk Enco enrouleur automatique
FR3137935B1 (fr) 2022-07-12 2024-06-21 A S Pool Chariot de support pour système de recouvrement de bassin

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3050743A (en) * 1961-08-07 1962-08-28 Philip A Mallinckrodt Extendible and retractable cover apparatus for swimming pools
US3070811A (en) * 1960-06-13 1963-01-01 Emil A Bender Flexible swimming pool cover
US3074079A (en) * 1961-06-05 1963-01-22 Isaacson Boris Retractable cover for swimming pools
US3277498A (en) * 1961-02-06 1966-10-11 Myron A Kleinbard Swimming pool cover assembly
US3418667A (en) * 1966-07-05 1968-12-31 Roy Y. Powlan Insulating swimming pool cover
US3747132A (en) * 1972-05-12 1973-07-24 E Foster Swimming pool cover

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3070811A (en) * 1960-06-13 1963-01-01 Emil A Bender Flexible swimming pool cover
US3277498A (en) * 1961-02-06 1966-10-11 Myron A Kleinbard Swimming pool cover assembly
US3074079A (en) * 1961-06-05 1963-01-22 Isaacson Boris Retractable cover for swimming pools
US3050743A (en) * 1961-08-07 1962-08-28 Philip A Mallinckrodt Extendible and retractable cover apparatus for swimming pools
US3418667A (en) * 1966-07-05 1968-12-31 Roy Y. Powlan Insulating swimming pool cover
US3747132A (en) * 1972-05-12 1973-07-24 E Foster Swimming pool cover

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4060860A (en) * 1976-03-31 1977-12-06 Lamb Joe H Braking system for motorized swimming pool covers
US4103368A (en) * 1976-07-12 1978-08-01 Tolo, Incorporated Pool cover having solar energy heating feature
US4195370A (en) * 1978-09-12 1980-04-01 Budd-Ke Enterprises, Inc. Apparatus for reeling and unreeling pool covers
US4407027A (en) * 1981-08-10 1983-10-04 Colon Jr George M Pool-cover apparatus and method
US4467978A (en) * 1982-10-27 1984-08-28 Sealed Air Corporation Reel system for swimming pool covers
US4675922A (en) * 1985-01-04 1987-06-30 Odyssey Systems Limited Hydraulic power attenuator
US5890240A (en) * 1990-05-04 1999-04-06 Graham; Wayne B. Sheet roll up
US5533214A (en) * 1990-05-04 1996-07-09 Graham; Wayne B. Sheet roll up
US5676652A (en) * 1992-07-23 1997-10-14 The Procter & Gamble Company Absorbent articles having undergarment covering components with mechanical fasteners having improved tactile properties
US6077255A (en) * 1995-07-17 2000-06-20 The Procter & Gamble Company Absorbent articles having undergarment covering components with mechanical fasteners having improved tactile properties
WO2000046469A1 (fr) * 1999-02-05 2000-08-10 Suez Lyonnaise Des Eaux Dispositif de manipulation d'une bâche ou d'une membrane sur l'ensemble de la surface d'un bassin
FR2789425A1 (fr) * 1999-02-05 2000-08-11 Suez Lyonnaise Des Eaux Dispositif de manipulation d'une bache ou d'une membrane sur l'ensemble de la surface d'un bassin
GB2363069A (en) * 1999-02-05 2001-12-12 Suez Lyonnaise Des Eaux Device for manoeuvring a cover or membrane of the entire surface of a pool
GB2363069B (en) * 1999-02-05 2002-10-02 Suez Lyonnaise Des Eaux Device for manoeuvring a cover or membrane over the entire surface of a pond
US20040143896A1 (en) * 2001-04-10 2004-07-29 Last Harry J. Traveling cover bench system with hydraulic fluid actuator
EP1410934A1 (en) * 2002-10-14 2004-04-21 Damiano Miglioranza Tarpaulin system for covering and uncovering, especially for a freight vehicle
WO2005071187A1 (en) * 2004-01-14 2005-08-04 Last Harry J Travelling cover bench system with hydraulic fluid actuator
US10378226B2 (en) * 2011-10-18 2019-08-13 Maytronics Ltd Pool cover winding system using water-powered piston motor
US20130092779A1 (en) * 2011-10-18 2013-04-18 Maytronics Ltd. Pool Cover Winding System Using Water-Powered Piston Motor
US9677293B2 (en) * 2013-10-13 2017-06-13 Maytronics Ltd. Pool cover leading edge rake
US20150101116A1 (en) * 2013-10-13 2015-04-16 Maytronics Ltd Pool cover leading edge rake
US20180187440A1 (en) * 2015-06-23 2018-07-05 Technics & Applications, Afgekort T&A, Besloten Vennootschap Met Beperkte Aansprakelijkheid Cover for a swimming pool or whirlpool bath and swimming pool or whirlpool bath that is provided therewith
CN107835882A (zh) * 2015-06-23 2018-03-23 技术与应用有限公司 用于游泳池或漩涡浴池的盖和设置有该盖的游泳池或漩涡浴池
BE1023223B1 (nl) * 2015-06-23 2017-01-03 Technics & Applications, Afgekort T&A, Besloten Vennootschap Met Beperkte Aansprakelijkheid Afdekking voor een zwembad of bubbelbad en zwembad of bubbelbad dat daarvan is voorzien
WO2016205901A1 (en) * 2015-06-23 2016-12-29 Technics & Applications, Afgekort T&A, Besloten Vennootschap Met Beperkte Aansprakelijkheid Cover for a swimming pool or whirlpool bath and swimming pool or whirlpool bath that is provided therewith
US10619367B2 (en) * 2015-06-23 2020-04-14 Technics & Applications, Afgekort T&A, Besloten Vennootschap Met Beperkte Aansprakelijkheid Cover for a swimming pool or whirlpool bath and swimming pool or whirlpool bath that is provided therewith
CN107835882B (zh) * 2015-06-23 2020-07-17 技术与应用有限公司 用于游泳池或漩涡浴池的盖和设置有该盖的游泳池或漩涡浴池
FR3084900A1 (fr) * 2017-11-23 2020-02-14 Florent Roussel Dispositif et procede d'enroulement d'une couverture de protection pour bassin
CN113939186A (zh) * 2019-03-29 2022-01-14 T·麦卡拉 用于覆盖物的辊设备及其使用方法
US20220041403A1 (en) * 2019-03-29 2022-02-10 Tim McCullagh Roller apparatus for a cover and method of use thereof
IT201900013359A1 (it) * 2019-07-30 2021-01-30 Emmer S A S Di Orsi Roberto E Prioli Mattia Sistema per la copertura di una piscina
EP3771784A1 (en) 2019-07-30 2021-02-03 Emmer S.A.S. Di Prioli Mattia A system for covering a swimming pool

Also Published As

Publication number Publication date
FR2244066A1 (xx) 1975-04-11
BE813334A (fr) 1974-07-31
SE7404467L (xx) 1975-03-14
DE2346139A1 (de) 1975-03-27
DE2346139C2 (de) 1982-09-09
FR2244066B3 (xx) 1977-02-11
DK197074A (xx) 1975-05-12
ATA255274A (de) 1976-01-15
NL7404393A (nl) 1975-03-17

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